1987 comanche engine turns over wont start - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > MJ Comanche Technical Forum > 1987 comanche engine turns over wont start

Rockridge 4WD IS Taking Zone Offroad Suspension Lift Kits ZONE 4.25" combo lift for TJ available at Rockridge4wG2 Disc Brake Conversion Kit for Jeep Wrangler YJ TJ LJ Ch

Reply
Unread 01-13-2013, 05:50 PM   #1
bob1965
Registered User
 
Join Date: Jan 2013
Location: allentown, pa
Posts: 3
1987 comanche engine turns over wont start

hi every one im new here im a wrench on motorcycles i own an 87 comanche about 160,000 miles went to pick something up a week ago ran fine there loaded up the truck turned the key would spin and try to start but no luck ..will run on spray...so i towed it home 3 hours later i tried it and it started ...today we replaced the fuel pump with correct bosch unit the pump will run for a few seconds and turn off but i have no fuel out of the tank relay is new as is filter remember it will run on spray im missing something need my truck back any ideas thanks bob

bob1965 is offline   Reply With Quote Quick reply to this message
Unread 01-13-2013, 06:32 PM   #2
97_4popper
Registered User
1990 MJ Comanche 
 
Join Date: Jan 2005
Location: Guston, KY
Posts: 463
Is it getting fuel to the fuel rail?

Is the fuel pump running? The ground on the back is a known issue.
It is behind one of the tail lights and is a small wire attached to the bed. Take it off, clean it and lightly sand it and where it connects and reattach.

Get over to comancheclub.com.
__________________
90 MJ 4.0 4X4 5sp LB Pioneer Big Ton.
Truck contains parts from 3 MJs, 2 XJs, 1 TJ and a dishwasher.
http://img.photobucket.com/albums/v1...IMG_0101-2.jpg
Check out comancheclub.com...
My build thread: http://comancheclub.com/forums/viewt...hp?f=7&t=27756
Wifes: 97 TJ 2.5 4X4 5sp 31's stock. . . Slow but; reliable.
97_4popper is offline   Reply With Quote Quick reply to this message
Unread 01-13-2013, 06:45 PM   #3
bob1965
Registered User
 
Join Date: Jan 2013
Location: allentown, pa
Posts: 3
pump runs ill thats in the post no fuel out of tank yes theres gas in it i just noticed it will crank in park but not in neutral been a long unproductive day
bob1965 is offline   Reply With Quote Quick reply to this message
Unread 01-15-2013, 07:58 PM   #4
mj40
Registered User
1989 MJ Comanche 
 
Join Date: Jul 2011
Location: north bay/corbeil, ontario
Posts: 282
one thought, it happened to me after replacing my tank... the new pump... did you replace the hose on the pump to sending unit and clamp it... i didnt and the hose split and just pumped fuel inside the tank and not out the sending unit..
mj40 is offline   Reply With Quote Quick reply to this message
Unread 01-22-2013, 05:32 AM   #5
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 10,318
There is possibly a fuel pump ballast resistor on your driver's side inner fender. White ceramic, wire to each end, bolt through the middle. Make sure connections are tight. It's OK to bypass it.
ballast-resistor.jpg  
__________________
Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.